Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. By signing up, you confirm you are 16+, will receive newsletters and promotional content and agree to our Terms of Use and acknowledge the data practices in our Privacy Policy . You may unsubscribe at any time. The ancient pyramids at Giza in Egypt are some of the most recognizable architectural feats in the world. The Great Pyramid itself was completed 4,600–4,450 years ago, yet remains largely intact despite spending millennia exposed to not only the harsh desert environment, but multiple major seismic events. Earthquakes in 1847 and 1992 rocked the region with respective magnitudes of 6.8 and 5.8, while other earthquakes have undoubtedly occurred in the generations before reliable measurements. So, how has the famous structure survived to the present day? It’s a question seismologists like Asem Salama at Egypt’s National Research Institute of Astronomy and Geophysics have pondered for years.…